tinyalxconfig-ng/init.d/alxsettings

#!/bin/bash

# <niro@magellan-linux.de>

#%rlevels: 7:s 0:k
#%start: 41
#%stop: 01

#deps
#%needs:
#%before:
#%after:

# $Header: /home/cvsd/alx-cvs/alx-src/tinyalxconfig-ng/init.d/alxsettings,v 1.7 2008-06-04 21:00:17 niro Exp $

# checks first if the client was already configured and if it has an valid serial
# if not it runs the autoconfiguration script
# these settings will be used for client setup
#
# if client was valid it first will check if his settings against the server
# if no changes are at server side they will be kept, if yes the get updated. 
# the server settings has higher priority.

source /etc/sysconfig/rc
source $rc_functions

# mysql settings
source /etc/alxconfig-ng/config.rc

# helper functions
source /usr/lib/alxconfig-ng/functions/mysqlfunctions
source /usr/lib/alxconfig-ng/functions/serial_functions
source /usr/lib/alxconfig-ng/functions/config_modules
source /usr/lib/alxconfig-ng/functions/config_network
source /usr/lib/alxconfig-ng/functions/config_printers
source /usr/lib/alxconfig-ng/functions/config_sessions
source /usr/lib/alxconfig-ng/functions/config_x11
source /usr/lib/alxconfig-ng/functions/config_auth
source /usr/lib/alxconfig-ng/functions/config_ssh_auth

# check if mysql is available
[ -x /usr/bin/mysql ] && MYSQL_ALX=true

# other needed vars
ALX_HW_DETECT=false
ALX_FORCED_RECHECK=false
ALX_RESET_SETTINGS=false
ALX_CONFD_NETWORKING=false

# unset vars which may kill us
unset ALX_SERIAL ALX_STATE


# setup needed directories
[ ! -d /etc/alxconfig-ng/state ] && install -d /etc/alxconfig-ng/state


# read_cmdline ${item}
read_cmdline()
{
	local i

	for i in $(< /proc/cmdline)
	do
		[[ ${i} = $1 ]] && return 0
	done

	return 1
}

update_system_settings()
{
	echo -e ${COLMAGENTA}"Checking system setup ..."${COLDEFAULT}

	# get the modules settings
	# ! is the first thing that must be configured !
	config_modules

	# imports network settings from db
	config_networking

	# imports x11 settings from db
	config_x11

	# imports session settings from db
	config_sessions

	# imports printer settings from db
	config_printing

	# imports auth settings from db
	config_auth

	# exchange ssh rsa keys
	HOME=/root config_ssh_auth
}

get_system_serial()
{
	local CUR_IP CUR_MAC CUR_MTIME ALX_IFACE

	if [[ ${ALX_CONFD_NETWORKING} = true ]]
	then
		ALX_IFACE="$(< ${SETTINGSPATH}/confd-networking)"
	else
		ALX_IFACE="eth0"
	fi

	# check if serial file exists
	if [ -f /etc/alxconfig-ng/serial ] && [[ ${ALX_FORCED_RECHECK} = false ]]
	then
		source /etc/alxconfig-ng/serial

		# start preliminary networking (dhcp)
		preliminary_network start

		# check if mysql server is reachable
		# if not abort this script
		if ! reach_mysql_server
		then
			preliminary_network stop
			exit 1
		fi

		CUR_IP=$(/sbin/ifconfig ${ALX_IFACE} | sed -n '/addr:/s/ [^r]*..//gp')
		CUR_MAC=$(/sbin/ifconfig ${ALX_IFACE} | grep HWaddr | cut -d ' ' -f11)
		CUR_MTIME=$(date +%s)

		echo -e ${COLOREDSTAR} "Trying to validate my serial ..."

		# nice serial output
		$CURS_UP
		$SET_WCOL
		echo "[ SN: ${ALX_SERIAL} ]"

		if validate_serial "${ALX_SERIAL}" "${ALX_REG_DATE}" "${CUR_MAC}"
		then
			ALX_STATE="ok"
		else
			# abort on non valid serial
			ALX_STATE="invalid serial"
			echo "ALX_STATE=${ALX_STATE}" > /etc/alxconfig-ng/state/state
			show_invalid_serial_msg
			exit 1
		fi

	else
		# run hardware detection
		echo
		if [[ ${ALX_FORCED_RECHECK} = true ]]
		then
			echo -e ${COLMAGENTA}"Hardware autodetection forced by system-administrator"${COLDEFAULT}
		else
			echo -e ${COLMAGENTA}"Preparing system for first boot"${COLDEFAULT}
		fi
		# cleaning up old data-crap
		if [ -d /etc/sysconfig/hwsetup ]
		then
			echo -e ${COLOREDSTAR}"Cleaning up old data ..."
			rm -f /etc/sysconfig/hwsetup/*
		fi
		ALX_HW_DETECT=true
		echo -en "${COLOREDSTAR}";hwsetup -p > /dev/null

		# set hostname to alx_default_hostname
		# use old hostname if this is a forced re-check
		[[ ${ALX_FORCED_RECHECK} = true ]] && ALX_DEFAULT_HOSTNAME="$(< /etc/hostname)"
		[ -z "${ALX_DEFAULT_HOSTNAME}" ] && ALX_DEFAULT_HOSTNAME=magellan-alx
		HOSTNAME="${ALX_DEFAULT_HOSTNAME}"

		# update the hostname on the system for sure
		echo "${HOSTNAME}" > /etc/hostname

		# start preliminary networking (dhcp)
		preliminary_network start

		# check if mysql server is reachable
		# if not abort this script
		if ! reach_mysql_server
		then
			preliminary_network stop
			exit 1
		fi

		CUR_IP=$(/sbin/ifconfig eth0 | sed -n '/addr:/s/ [^r]*..//gp')
		CUR_MAC=$(/sbin/ifconfig eth0 | grep HWaddr | cut -d ' ' -f11)
		CUR_MTIME=$(date +%s)

		# abort now if this is a forced re-check
		if [[ ${ALX_FORCED_RECHECK} = true ]]
		then
			# but first check the serial
			source /etc/alxconfig-ng/serial

			echo -e ${COLOREDSTAR} "Trying to validate my serial ..."

			# nice serial output
			$CURS_UP
			$SET_WCOL
			echo "[ SN: ${ALX_SERIAL} ]"

			if validate_serial "${ALX_SERIAL}" "${ALX_REG_DATE}" "${CUR_MAC}"
			then
				ALX_STATE="ok"
			else
				# abort on non valid serial
				ALX_STATE="invalid serial"
				echo "ALX_STATE=${ALX_STATE}" > /etc/alxconfig-ng/state/state
				show_invalid_serial_msg
				exit 1
			fi

			# write current state to temp file
			echo "ALX_STATE=${ALX_STATE}" > /etc/alxconfig-ng/state/state
			[ -f /hardware-auto-detection ] && rm /hardware-auto-detection

			# now export ALX_FORCED_RECHECK=true
			# that the setting will be updated not inserted !
			export ALX_FORCED_RECHECK=true
			return 0
		fi

		echo -e ${COLOREDSTAR} "Trying to get new serial ..."

		# request a new serial; one command now (cause must be done in the same session)
		ALX_SERIAL=$(mysqldo "insert into client_serials (mtime, mac) values('${CUR_MTIME}','${CUR_MAC}');
			select last_insert_id();")

		if [[ ${ALX_SERIAL} != NULL ]]
		then
			# nice serial output
			$CURS_UP
			$SET_WCOL
			echo "[ SN: ${ALX_SERIAL} ]"

			# set ALX_STATE to ok so everybody knows that everything was ok
			ALX_STATE=ok

			echo "ALX_SERIAL=${ALX_SERIAL}" > /etc/alxconfig-ng/serial
			echo "ALX_REG_DATE=${CUR_MTIME}" >> /etc/alxconfig-ng/serial

			evaluate_retval
		else
			# print false (works only if this is the first statement here)
			evaluate_retval

			# set ALX_STATE to error so everybody sees there was an error
			ALX_STATE=error

			# show an error that no new serial was found
			# nice serial output
			$CURS_UP
			$SET_WCOL
			echo -e "[ SN: ${COLRED}None, 0${COLDEFAULT} ]"
		fi
	fi

	# write current state to temp file
	echo "ALX_STATE=${ALX_STATE}" > /etc/alxconfig-ng/state/state
	echo "ALX_IFACE=${ALX_IFACE}" >> /etc/alxconfig-ng/state/state
}


check_is_configured()
{
	if [ -f /etc/alxconfig-ng/state/configured ]
	then
		export ALX_CONFIGURED=true
	else
		export ALX_CONFIGURED=false
	fi
}


# imports current settings to the database resolved by the hardware detection
import_settings_to_db()
{
	# note: networking is always 'dhcp' if hw was autodetected
	# note: default_domain/hostname is set in config.rc

	# to be safe, we do some sanity checks
	[ -z "${ALX_DEFAULT_DOMAIN}" ] && ALX_DEFAULT_DOMAIN=localdomain
	[ -z "${ALX_DEFAULT_HOSTNAME}" ] && ALX_DEFAULT_HOSTNAME=magellan-alx

	# vars used by hwdetect
	local NETCARD_FULLNAME NETCARD_DRIVER MOUSE_FULLNAME MOUSE_DEVICE SOUND_FULLNAME
	local SOUND_DRIVER XSERVER XMODULE XDESC FLOPPY_FULLNAME FLOPPY_DEVICE FLOPPY_DRIVER
	local MOUSETYPE XMOUSETYPE FULLNAME DEVICE

	# get setting from hwdetect
	source /etc/sysconfig/hwsetup/knoppix
	source /etc/sysconfig/hwsetup/mouse

	echo
	echo -e ${COLMAGENTA}"Importing detected settings to database"${COLDEFAULT}

	# network
	echo -e "      Network settings ..."
	if [[ ${ALX_CONFD_NETWORKING} = true ]]
	then
		# get settings
		#source ${rc_base}/init.d/network &> /dev/null
		for iface in $(onboot_interface_list ${network_settings}/net.*)
		do
			[[ $(< ${SETTINGSPATH}/confd-networking) != ${iface} ]] && continue
			echo "WARNING: only importing settings for interface [ ${iface} ] !"
			source ${network_settings}/net.${iface} || exit 1
			NETCARD_DRIVER="$(cat /etc/modules.d/net.${iface} | cut -d' ' -f3)"

			mysqldo "insert into cfg_network(
				hostname,
				serial,
				module,
				domain,
				networking,
				netmask,
				dns,
				gateway,
				broadcast,
				ip,
				forcemacto,
				wireless_bitrate,
				wireless_channel,
				wireless_essid,
				wireless_frequency,
				wireless_mode,
				wireless_nick,
				wireless_auth_mode,
				wireless_key_length,
				wireless_key,
				wireless_key_ascii
			)
			values(
				'${ALX_DEFAULT_HOSTNAME}',
				'${ALX_SERIAL}',
				'${NETCARD_DRIVER}',
				'${ALX_DEFAULT_DOMAIN}',
				'${NETWORKING}',
				'${NETMASK}',
				'${NAMESERVER}',
				'${GATEWAY}',
				'${BROADCAST}',
				'${IP}',
				'${FORCE_MAC_TO}',
				'${WIRELESS_BITRATE}',
				'${WIRELESS_CHANNEL}',
				'${WIRELESS_ESSID}',
				'${WIRELESS_FREQUENCY}',
				'${WIRELESS_MODE}',
				'${WIRELESS_NICK}',
				'${WIRELESS_AUTH_MODE}',
				'${WIRELESS_KEY_LENGTH}',
				'${WIRELESS_KEY}',
				'${WIRELESS_KEY_ASCII}'
			);"

			# only insert the *FIRST* iface
			break
		done
	else
		mysqldo "insert into cfg_network(
				hostname,
				serial,
				module,
				domain,
				networking
			)
			values(
				'${ALX_DEFAULT_HOSTNAME}',
				'${ALX_SERIAL}',
				'${NETCARD_DRIVER}',
				'${ALX_DEFAULT_DOMAIN}',
				'dhcp'
			);"
	fi
	evaluate_retval

	# xserver
	echo -e "      Graphic settings ..."
	# xserver general
	( mysqldo "insert into cfg_graphic(
			serial,
			module,
			resolution,
			depth,
			monitorid
		)
		values(
			'${ALX_SERIAL}',
			'${XMODULE}',
			'1024x768',
			'16',
			'0'
		);"; )
	evaluate_retval

	# input
	echo -e "      Input settings ..."
	mysqldo "insert into cfg_input(serial,mouse) values('${ALX_SERIAL}','${XMOUSETYPE}');"
	evaluate_retval

	# auth
	echo -e "      Authentification settings ..."
	mysqldo "insert into client_auth(
			serial,
			username,
			shell,
			vnc,
			samba,
			station
		)
		values(
			'${ALX_SERIAL}',
			'${ALX_UNPRIV_USER}',
			'',
			'',
			'',
			''
		);"
	evaluate_retval

	# exchange ssh rsa keys - the first boot needs this !
	# or no reboot will work via the webadmin
	echo -e "      SSH authentification settings ..."
	HOME=/root config_ssh_auth
	evaluate_retval

	# autostart
	echo -e "      Autostart settings ..."
	mysqldo "insert into cfg_autostart(serial,session) values('${ALX_SERIAL}','');"

	# screensaver
	echo -e "      Screensaver settings ..."
	mysqldo "insert into cfg_screensaver(serial,screensaver) values('${ALX_SERIAL}','')"

	evaluate_retval
}

# imports current settings to the database resolved by the hardware detection
update_settings_in_db()
{
	# note: networking is always 'dhcp' if hw was autodetected
	# note: default_domain/hostname is set in config.rc or exported
	# note: we updating only hardware settings here !

	# to be safe, we do some sanity checks
	[ -z "${ALX_DEFAULT_DOMAIN}" ] && ALX_DEFAULT_DOMAIN=localdomain
	[ -z "${ALX_DEFAULT_HOSTNAME}" ] && ALX_DEFAULT_HOSTNAME=magellan-alx

	# vars used by hwdetect
	local NETCARD_FULLNAME NETCARD_DRIVER MOUSE_FULLNAME MOUSE_DEVICE SOUND_FULLNAME
	local SOUND_DRIVER XSERVER XMODULE XDESC FLOPPY_FULLNAME FLOPPY_DEVICE FLOPPY_DRIVER
	local MOUSETYPE XMOUSETYPE FULLNAME DEVICE

	# get setting from hwdetect
	source /etc/sysconfig/hwsetup/knoppix
	source /etc/sysconfig/hwsetup/mouse

	echo
	echo -e ${COLMAGENTA}"Updating detected settings in database"${COLDEFAULT}

	# network
	echo -e "      Network settings ..."
	if [[ ${ALX_CONFD_NETWORKING} = true ]]
	then
		# get settings
		#source ${rc_base}/init.d/network &> /dev/null
		for iface in $(onboot_interface_list ${network_settings}/net.*)
		do
			[[ $(< ${SETTINGSPATH}/confd-networking) != ${iface} ]] && continue
			echo "WARNING: only importing settings for interface [ ${iface} ] !"
			source ${network_settings}/net.${iface} || exit 1
			NETCARD_DRIVER="$(cat /etc/modules.d/net.${iface} | cut -d' ' -f3)"

			mysqldo "update cfg_network set
					hostname='${ALX_DEFAULT_HOSTNAME}',
					module='${NETCARD_DRIVER}',
					domain='${ALX_DEFAULT_DOMAIN}',
					networking='${NETWORKING}',
					netmask='${NETMASK}',
					dns='${NAMESERVER}',
					gateway='${GATEWAY}',
					broadcast='${BROADCAST}',
					ip='${IP}',
					forcemacto='${FORCE_MAC_TO}',
					wireless_bitrate='${WIRELESS_BITRATE}',
					wireless_channel='${WIRELESS_CHANNEL}',
					wireless_essid='${WIRELESS_ESSID}',
					wireless_frequency='${WIRELESS_FREQUENCY}',
					wireless_mode='${WIRELESS_MODE}',
					wireless_nick='${WIRELESS_NICK}',
					wireless_auth_mode='${WIRELESS_AUTH_MODE}',
					wireless_key_length='${WIRELESS_KEY_LENGTH}',
					wireless_key='${WIRELESS_KEY}',
					wireless_key_ascii='${WIRELESS_KEY_ASCII}'
				where serial=${ALX_SERIAL};"

			# only insert the *FIRST* iface
			break
		done
	else
		mysqldo "update cfg_network set
				hostname='${ALX_DEFAULT_HOSTNAME}',
				module='${NETCARD_DRIVER}',
				domain='${ALX_DEFAULT_DOMAIN}',
				networking='dhcp'
			where serial=${ALX_SERIAL};"
	fi
	evaluate_retval

	# xserver
	echo -e "      Graphic settings ..."
	# xserver general
	mysqldo "update cfg_graphic set
			module='${XMODULE}',
			resolution='1024x768',
			depth='16',
			monitorid='0'
		where serial=${ALX_SERIAL};"
	evaluate_retval

	# input
	echo -e "      Input settings ..."
	mysqldo "update cfg_input set mouse='${XMOUSETYPE}' where serial=${ALX_SERIAL};"
	evaluate_retval
}

# imports current settings to the local system resolved by the hardware detection
# we only need the network settings
import_settings_local()
{
	# note: networking is always 'dhcp' if hw was autodetected
	# note: default_domain/hostname is set in config.rc

	# to be safe, we do some sanity checks
	[ -z "${ALX_DEFAULT_DOMAIN}" ] && ALX_DEFAULT_DOMAIN=localdomain
	[ -z "${ALX_DEFAULT_HOSTNAME}" ] && ALX_DEFAULT_HOSTNAME=magellan-alx

	# vars used by hwdetect
	local NETCARD_FULLNAME NETCARD_DRIVER MOUSE_FULLNAME MOUSE_DEVICE SOUND_FULLNAME
	local SOUND_DRIVER XSERVER XMODULE XDESC FLOPPY_FULLNAME FLOPPY_DEVICE FLOPPY_DRIVER
	local MOUSETYPE XMOUSETYPE FULLNAME DEVICE

	# get setting from hwdetect
	source /etc/sysconfig/hwsetup/knoppix

	echo
	echo -e ${COLMAGENTA}"Importing detected settings to local system"${COLDEFAULT}

	# set system state to 'already configured'
	touch /etc/alxconfig-ng/state/configured

	# if only an recheck was forced than abort now
	[[ ${ALX_FORCED_RECHECK} = true ]] && return 0

	# create a fresh fluxbox directory
	[ -d ${ALX_UNPRIV_HOME}/.fluxbox ] && rm -rf ${ALX_UNPRIV_HOME}/.fluxbox
	install -d ${ALX_UNPRIV_HOME}/.fluxbox

	# now generate fluxbox config files

	# fluxbox main config
	cat ${ALX_SKELETONS}/fluxbox/init \
		> ${ALX_UNPRIV_HOME}/.fluxbox/init

	# fluxbox autostart
	cat ${ALX_SKELETONS}/fluxbox/apps \
		> ${ALX_UNPRIV_HOME}/.fluxbox/apps

	# fluxbox menu header
	cat ${ALX_SKELETONS}/fluxbox/menu.header \
		> ${ALX_UNPRIV_HOME}/.fluxbox/menu

	# now fix it with proper messages :P
	local ver="$(< /etc/mageversion)"
	sed -i "s:@CHANGEME@:alx-${ver}  #${ALX_SERIAL}:g" \
		${ALX_UNPRIV_HOME}/.fluxbox/menu

	# add a newline (maybe there is no crlf in the header)
	echo >> ${ALX_UNPRIV_HOME}/.fluxbox/menu

	# fluxbox menu footer
	cat ${ALX_SKELETONS}/fluxbox/menu.footer \
		>> ${ALX_UNPRIV_HOME}/.fluxbox/menu

	# add a newline (maybe there is no crlf in the footer)
	echo >> ${ALX_UNPRIV_HOME}/.fluxbox/menu


	# setup some standart icons (sysinfo.lnk)
	# basic config
	cat ${ALX_SKELETONS}/xtdesktop/xtdeskrc > ${ALX_UNPRIV_HOME}/.xtdeskrc

	# clean desktop icon location
	[ -d ${ALX_UNPRIV_HOME}/.xtdesktop ] && rm -rf ${ALX_UNPRIV_HOME}/.xtdesktop
	install -d ${ALX_UNPRIV_HOME}/.xtdesktop

	# last but not least gen a icon with some sys informations
	local sysinfo
	local osversion
	local xres
	local yres

	osversion="$(< /etc/mageversion)"
	sysinfo="Hostname: ${ALX_DEFAULT_HOSTNAME} Serial: #${ALX_SERIAL} OS: alx-${osversion} Kernel: $(uname -r)"

	# at first boot we got always a resolution of 1024x768-16@60
	# middle of the screen
	# (no txt - length required, xtdesk manage that itself)
	xres="$((1024 / 2))"
	# default y pos (full yres -22 !)
	yres="$((768 - 22 ))"

	generate_icon \
		--name "${sysinfo}" \
		--command "exit 0" \
		--icon "${ALX_SESSIONS_ICONS}/sysinfo.png" \
		--dest "${ALX_UNPRIV_HOME}/.xtdesktop/sysinfo.lnk" \
		--xres "${xres}" \
		--yres "${yres}" \
		--icon-width "1" \
		--icon-height "1"

	# create a xinitrc
	echo "exec startfluxbox" > ${ALX_UNPRIV_HOME}/.xinitrc

	# set correct permissions
	chown ${ALX_UNPRIV_USER}:${ALX_UNPRIV_GROUP} ${ALX_UNPRIV_HOME}
	chown ${ALX_UNPRIV_USER}:${ALX_UNPRIV_GROUP} ${ALX_UNPRIV_HOME}/.fluxbox
	chmod 0755 ${ALX_UNPRIV_HOME}/.fluxbox
	chmod 0755 ${ALX_UNPRIV_HOME}/.xtdesktop
	chmod 0644 ${ALX_UNPRIV_HOME}/.xtdeskrc
	chmod 0644 ${ALX_UNPRIV_HOME}/.xinitrc
}

# start|stop
preliminary_network()
{
	case $1 in
		start)
			# keeping like always safe:
			# no network should be started here
			${rc_base}/init.d/network stop

			echo -e ${COLMAGENTA}"Starting preliminary networking ... "${COLDEFAULT}
			# start network configured from /etc/conf.d
			${rc_base}/init.d/network start
			;;

		stop)
			echo -e ${COLMAGENTA}"Stopping preliminary networking ... "${COLDEFAULT}
			${rc_base}/init.d/network stop
			;;

		*)
			echo "Usage: preliminary_network {start|stop}"
			;;
	esac
}

reset_system_settings()
{
	# force load of de kbdkeys
	loadkeys -q de
	echo
	echo -en ${COLRED}
	echo -n "*** Warning: you are about to reset *all* local settings on this system!"
	echo -e ${COLDEFAULT}
	echo "*** Do you really want to continue ?"
	echo -n "*** Enter 'yes' to continue, anything else to abort: "
	read kbinsert
	if [[ ${kbinsert} = yes ]]
	then
		echo -en ${COLRED}
		echo -n "*** OK, you really want it ... killing all settings: "
		for i in 3 2 1 now
		do
			echo -n " ${i}"
			sleep 1
		done
		echo -e ${COLDEFAULT}

		## reset all settings:
		rm -rf ${SETTINGSPATH}/*
		rm -f /etc/alxconfig-ng/serial
		rm -rf /etc/alxconfig-ng/state

		# clear all printers & net-shares
		:> /etc/cups/printers.conf
		:> /etc/samba/smb.conf

		# remove inetd, cups & smb from init
		rc-config del inetd &> /dev/null
		rc-config del cups &> /dev/null
		rc-config del samba &> /dev/null

		# remove all user settings
		[ -d ${ALX_UNPRIV_HOME} ] && rm -rf ${ALX_UNPRIV_HOME}

		# remove all ica-sessions
		find ${ALX_ICA_SESSIONS} -type f -name '*.ica' | xargs rm

		# remove all old nics and modules configs
		find /etc/conf.d -type f -name 'net.*' | xargs rm
		find /etc/modules.d -type f -name 'net.*' | xargs rm

		# restore default networking
		cat ${ALX_SKELETONS}/net/net.eth0 > /etc/conf.d/net.eth0

		echo "I am done now, press [Enter] to reboot system ..."
	else
		echo "Aborted, press [Enter] to reboot system ..."
	fi
	read
	reboot
}

onboot_interface_list()
{
	local file
	local devices
	local iface

	# get list of all devices
	for file in $@
	do
		if [[ $(read_value ONBOOT ${file}) = yes ]]
		then
			iface="$(basename ${file} | sed s/net.//)"
			# exclude backup files
			case "${iface}" in
				*~) ;;
				*) devices="${devices} $(basename ${file} | sed s/net.//)" ;;
			esac
		fi
	done

	echo "${devices}"
}

# read values from net.* files
read_value()
{
	local var="$1"
	local file="$2"
	local value

	# local all possible vars
	# global
	local ONBOOT
	local NETWORKING
	
	# static
	local IP
	local NETMASK
	local BROADCAST
	local NETWORKING
	local FORCE_MAC_TO

	# dhcp
	local DHCP_PROG
	local DHCP_START
	local DHCP_STOP

	# default gw
	local GATEWAY
	local GATEWAY_IF

	# wireless extensions
	local WIRELESS_AP
	local WIRELESS_AUTH_MODE
	local WIRELESS_BITRATE
	local WIRELESS_CHANNEL
	local WIRELESS_DEFAULT_KEY
	local WIRELESS_ESSID
	local WIRELESS_FREQUENCY
	local WIRELESS_KEY
	local WIRELESS_KEY_ASCII
	local WIRELESS_KEY_0
	local WIRELESS_KEY_1
	local WIRELESS_KEY_2
	local WIRELESS_KEY_3
	local WIRELESS_KEY_LENGTH
	local WIRELESS_MODE
	local WIRELESS_NICK
	local WIRELESS_NWID
	local WIRELESS_POWER

	source ${file}
	eval value=\$$(echo ${var})
	echo "${value}"
}

case $1 in
	start)
		# check for global overrides
		[ -f ${SETTINGSPATH}/confd-networking ] && ALX_CONFD_NETWORKING=true
		[ -f /hardware-auto-detection ] && ALX_FORCED_RECHECK=true
		read_cmdline hardware-auto-detection && ALX_FORCED_RECHECK=true
		read_cmdline alx-reset-settings && ALX_RESET_SETTINGS=true

		# kill all settings if requested
		if [[ ${ALX_RESET_SETTINGS} = true ]]
		then
			reset_system_settings
		fi

		# retrieve or validate current serial
		get_system_serial
		if [[ ${ALX_HW_DETECT} = true ]]
		then
			if [[ ${ALX_FORCED_RECHECK} = true ]]
			then
				update_settings_in_db
			else
				import_settings_to_db
			fi
			import_settings_local

			# here we should also exchange the ssh keys
			# or the system cannot be rebooted after
			# the first start via the alx-webadmin
			config_ssh_auth
		fi

		# now setup system configuration
		# alx_setup_or_whatever_it_will_be_called()
		[[ ${ALX_HW_DETECT} = false ]] && update_system_settings

		# stop at last the preliminary networking (dhcp)
		preliminary_network stop
		;;

	stop)
		# unset_alx_connected #--> now in alxsetstate-rc6
		# ! important !: del systemstate
		[ -f /etc/alxconfig-ng/state/state ] && rm /etc/alxconfig-ng/state/state
		sleep 0.1
		;;
	*)
		echo "Usage: $0 {start|stop} ..."
		;;
esac
